1. Peritoneal Surface Malignancies Unit, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Istituto Nazionale Tumori dei Tumori di Milano, Milano, Italy
2. Clinical Epidemiology and Trial Organization Unit, Fondazione IRCCS Istituto Nazionale Tumori dei Tumori di Milano, Milano, Italy
3. Nonprofit Organization to Support Peritoneal Surface Malignancy Treatment, Kishiwada, Japan
4. Washington Cancer Institute, Washington Hospital Center, Washington, DC
5. Basingstoke and North Hampshire National Health Service Foundation Trust, Basingstoke, United Kingdom
6. Surgical Oncology Service, Wake Forest University Baptist Medical Center, Winston-Salem, North Carolina
7. Department of Visceral and Oncologic Surgery, Hôpital Saint-Louis, Assistance Publique–Hôpitaux de Paris, Paris, France
8. fellow at European School of Peritoneal Surface Oncology, Milano, Italy
9. Hepatobiliary and Surgical Oncology Unit, Department of Surgery, University of New South Wales, St George Hospital, Sydney, Australia
10. Department of Digestive Surgery, Centre Hospitalo-Universitaire Lyon-Sud, Hospices Civils de Lyon, Lyon, France
11. Division of Surgery, Department of Surgical Oncology, The Institute for Cancer Care, Mercy Medical Center, Baltimore, Maryland
12. Department of Oncological Surgery, Hospital Sant Joan Despí, Moises Broggi, Peritoneal Surface Malignancy Catalonian’s Programme, Sant Joan Despí, Barcelona, Spain
13. Centre Régional de Lutte Contre le Cancer Val d’Aurell, Montpellier, France
14. Réseau National de Prise en Charge des Tumeurs Rares du Péritoine, French National Registry of Rare Peritoneal Surface Malignancies, Lyon, France
15. Department of General Surgery, Hospital Universitario de Araba, Hospital Universitario Araba Sede Hospital Santiago, Santiago, Spain
16. Departamento de Cirugía General, Universidad del País Vasco, Vitoria, Spain
17. Programa de Carcinomatosis Peritoneal, Hospital San José, Vitoria, Spain
18. Department of Surgery, Catharina Hospital, Eindhoven, the Netherlands
19. Department of Gastrointestinal Surgery, Ghent University Hospital, Ghent, Belgium
20. Department of Surgery I, University of Wuerzburg, Wuerzburg, Germany
21. Department of General and Visceral Surgery, Krankenhaus Barmherzige Brüder, Regensburg, Germany
22. Peritoneal Surface Oncology Program, Department of Surgical Oncology, MD Anderson Cancer Center, Madrid, Spain
23. Department of Surgical Oncology, Ziekenhuis Oost-Limburg, Genk, Belgium